NL6621M is a highly integrated SOC , especially for the low-cost high data throughput wireless LAN products and designs. It integrates MCU , MAC , 1T1R baseband and band amplifier RF transceiver on a single chip NL6621M support 802.11b / g / n and Wi-Fi Direct ( SDIO card mode), BSS STA , soft AP , WiFi Protected Setup. It also supports WMM-PS and WPA / WPA2 security protocol. NL6621M not only for control by the host processor from the device also can be used without any other processor-independent WLAN device. It supports common interfaces include QuadSPI , standard SPI , I2C , UART , GPIO , I2S audio, PWM audio. NL6621M with as speakers, cameras, flash memory, LCD monitors and other peripherals directly connected to the rich. TCP / IP , UPD , HTTP and other rich Internet protocol has been integrated in NL6621M . High-performance wireless transmission, rich interface and protocol support allows NL6621M the best choice for wireless audio, wireless video, wireless smart home and wireless healthcare and other single-chip solution. Secondary Development: completely open source, Standar_SDK, Wifi-Uart_SDK, Apple Homekit_SDK, witty cloud Gizwits_SDK; The on-chip CPU: 1. The frequency can be flexibly configured as: 160M, 120M, 80M, 40M; 2. Second 448KB RAM (where CODE RAM is 192K), for WLAN and custom applications. Wi-Fi networks operating modes: 1.BSS STA 2.Soft BSS AP 3.WIFI direct (SDIO card mode) 4.Ad hoc 5.DirectConfig a key shortcut configuration Support rate: 1.802.11b: 1,2,5.5,11Mbps 2.802.11g: 6,9,12,18,24,36,48,54Mbps 3.802.11n: 6.5Mbps-65Mbps, 7.2Mbps-72.2Mb 1. UART, can be used as high-speed data or control interface 2. I2C, external EEPROM memory chip 3. Integrated standard SPI interface, the external display module SPI interface 4. Integrated up to 32 GPIO interfaces 5. 2 pulse width modulation integrated interfaces 6.1 hardware watchdog timer, and a hard Applications · Smart Security · Internet appliances · smart toys · WIFI lamps · Smart Card Terminal · WIFI Speakers Module size and interfaces: Simple test methods: as long as a USB to TTL, are 3.3V , GND , UTXD , URXD , the power module can work normally. The default baud rate is 115200 .